简洁的js拖拽代码

很简单的js拖拽代码, 传入要拖拽的元素ID名字即可

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JS拖动层</title>
</head>
<body>
<div id="f" style="position: absolute; width: 216px; height: 138px; background-color: skyblue;font-size: 12px; top: 210px; left: 180px; z-index: 101; border: solid 1px blue;">
<div id="title" style="background-color: Blue; cursor: move; height: 20px; color: #fff;font-size: 12px; padding-top: 5px; padding-left: 10px;">Title</div>
Content
Conten
</div>
<script type="text/javascript">

var _fun = function(w){
    document.getElementById(w).onmousedown=function(evt){
        ev = evt || window.event;
        this.offset = { x: ev.offsetX || ev.layerX, y: ev.offsetY || ev.layerY };
        this.onmouseup = function(){ this.onmouseup=null; this.onmousemove=null; };
        this.onmousemove = function(et){ 
            et = et || window.event;
            this.style.left = (et.clientX-this.offset.x)+'px';
            this.style.top = (et.clientY-this.offset.y)+'px';
        };
    };
};
//传入要拖拽元素的ID名字
_fun('f');

</script>
</body>
</html>

 

posted @ 2014-03-13 23:02  青松梧桐  阅读(322)  评论(0)  编辑  收藏  举报